The Spectrum of Open String Field Theory at the Stable Tachyonic Vacuum

Abstract

We present a level (10,30) numerical computation of the spectrum of quadratic fluctuations of Open String Field Theory around the tachyonic vacuum, both in the scalar and in the vector sector. Our results are consistent with Sen's conjecture about gauge-triviality of the small excitations. The computation is sufficiently accurate to provide robust evidence for the absence of the photon from the open string spectrum. We also observe that ghost string field propagators develop double poles. We show that this requires non-empty BRST cohomologies at non-standard ghost numbers. We comment about the relations of our results with recent work on the same subject.

33 pages, 10 figures

References in corpus (2)

• Comments on Schnabl's analytic solution for tachyon condensation in Witten's open string field theory
• Rolling Solution for Tachyon Condensation in Open String Field Theory

Cited by in corpus (14)

• A Simple Analytic Solution for Tachyon Condensation
• Analytic solutions for marginal deformations in open superstring field theory
• Real analytic solutions for marginal deformations in open superstring field theory
• String Field Theory Solution for Any Open String Background
• Marginal deformations in string field theory
• Marginal deformation for the photon in superstring field theory
• Rolling to the tachyon vacuum in string field theory
• Marginally Deformed Rolling Tachyon around the Tachyon Vacuum in Open String Field Theory
• The off-shell Veneziano amplitude in Schnabl gauge
• Fluctuations around the Tachyon Vacuum in Open String Field Theory
• Light-like tachyon condensation in Open String Field Theory
• Level Truncation Approach to Open String Field Theory
• Deriving on-shell open string field amplitudes without using Feynman rules
• Numerical universal solutions in $a$-gauge in open string field theory